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8th Street Bridge
Public Information Session
November 19th, 2015
Agenda
 Welcome & Opening Comments (Mayor Rick Chrest)
 Presentation (Coenraad Fourie, Manager of
Development & Transpor...
Background History
 Structure consists of 2 distinct sections:
– 1934 section - north of railway tracks (81 years
old);
–...
Studies & Maintenance
 1984 – Condition Assessment leading to:
– replacement of asphalt surfacing with 100mm
concrete dec...
Studies & Maintenance (cont.)
 1992 – Complete Condition Assessment leading to:
– Partial and full depth deck repairs to ...
Studies & Maintenance (cont.)
 1999 – Detailed condition assessment revealing:
– High corrosion potential of steel reinfo...
Studies & Maintenance (cont.)
 2011 & 2012 – Detailed condition assessment by Dillon
Consulting Ltd. reiterates increasin...
8th Street Bridge Current
Condition
8th Street Bridge Current
Condition
Option #1: Rehabilitate to allow
limited vehicle traffic
 Estimated Cost of $1.325M
 Estimated project timeline of 2 – 3...
Option #1: Rehabilitate to allow
limited vehicle traffic (cont.)
 Disadvantages
– Will require additional measures to lim...
Option #2: Demolish & Replace
 Demolition cost of $2.3M and then $28. 5M to $33M for
replacement (depending on location) ...
Option #2: Demolish & Replace
(cont.)
 Disadvantages
– Completion will likely coincide with new Daly Overpass
– High capi...
Option #3: Demolish and replace
with pedestrian/cyclist crossing
 Estimated Cost of $2.3M demolition, plus $9.5M for
pede...
Option #3: Demolish and replace with
pedestrian/cyclist crossing (cont.)
 Disadvantages
– No vehicular connection
– High ...
Option #4: Demolish
 Estimated Cost of $2.3M
 Estimated timeline of 1 – 2 years
 Advantages
– Mitigates public safety c...
Questions ?
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8th Street Bridge Community Information Session November 19th, 2015 Slide 1 8th Street Bridge Community Information Session November 19th, 2015 Slide 2 8th Street Bridge Community Information Session November 19th, 2015 Slide 3 8th Street Bridge Community Information Session November 19th, 2015 Slide 4 8th Street Bridge Community Information Session November 19th, 2015 Slide 5 8th Street Bridge Community Information Session November 19th, 2015 Slide 6 8th Street Bridge Community Information Session November 19th, 2015 Slide 7 8th Street Bridge Community Information Session November 19th, 2015 Slide 8 8th Street Bridge Community Information Session November 19th, 2015 Slide 9 8th Street Bridge Community Information Session November 19th, 2015 Slide 10 8th Street Bridge Community Information Session November 19th, 2015 Slide 11 8th Street Bridge Community Information Session November 19th, 2015 Slide 12 8th Street Bridge Community Information Session November 19th, 2015 Slide 13 8th Street Bridge Community Information Session November 19th, 2015 Slide 14 8th Street Bridge Community Information Session November 19th, 2015 Slide 15 8th Street Bridge Community Information Session November 19th, 2015 Slide 16 8th Street Bridge Community Information Session November 19th, 2015 Slide 17
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8th Street Bridge Community Information Session November 19th, 2015

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Presentation provided by City of Brandon Administration at the 8th Street Bridge Community Information Session held November 19th, 2015, at Brandon City Hall.

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8th Street Bridge Community Information Session November 19th, 2015

  1. 1. 8th Street Bridge Public Information Session November 19th, 2015
  2. 2. Agenda  Welcome & Opening Comments (Mayor Rick Chrest)  Presentation (Coenraad Fourie, Manager of Development & Transportation)  Questions and Answer (Mayor Rick Chrest & City Councillors  Wrap-up and Next Steps
  3. 3. Background History  Structure consists of 2 distinct sections: – 1934 section - north of railway tracks (81 years old); – 1968 section – spans over railway tracks (47 years old)  Structure is at end of life, typical maximum life expectancy is 50 years
  4. 4. Studies & Maintenance  1984 – Condition Assessment leading to: – replacement of asphalt surfacing with 100mm concrete deck surfacing for total of 275mm and – repairs to substructure and – expansion joints (Reid Crowther & Partners Ltd.)
  5. 5. Studies & Maintenance (cont.)  1992 – Complete Condition Assessment leading to: – Partial and full depth deck repairs to 1968 and 1934 bridge sections; – penetrating sealer applied to deck and sidewalks to slow down deterioration; – repairs to bridge deck supports at locations 4, 7 and 10; – repairs to southern bridge (1968 section) abutment / deck support structure; – repairs to western bridge deck support beam and walkway support beams on 1934 (northern) section; – expansion joint repairs (Reid Crowther & Partners Ltd.)
  6. 6. Studies & Maintenance (cont.)  1999 – Detailed condition assessment revealing: – High corrosion potential of steel reinforcement; – Shear cracks in bridge support beams (Reid Crowther & Partners Ltd)  1999 - Bridge Inspection Programme launched with biannual inspections performed from 2000 to 2007 by Reid Crowther & Partners and Earth Tech revealed: – continuously increasing corrosion potential; – bridge deck chloride contents well in excess of acceptable threshold values i.e. accelerated deterioration potential
  7. 7. Studies & Maintenance (cont.)  2011 & 2012 – Detailed condition assessment by Dillon Consulting Ltd. reiterates increasing corrosion potential and escalating chlorides  September 2015 – City commissions Dillon Consulting Ltd. for structural evaluation which leads to bridge closure.  October 2015 – Dillon Consulting Ltd. retained for cost estimates of rehabilitation options;  November 2015 –City Engineer presents options to City Council; City Council holds Public Information Session
  8. 8. 8th Street Bridge Current Condition
  9. 9. 8th Street Bridge Current Condition
  10. 10. Option #1: Rehabilitate to allow limited vehicle traffic  Estimated Cost of $1.325M  Estimated project timeline of 2 – 3 years  Advantages – Restores limited vehicle connectivity
  11. 11. Option #1: Rehabilitate to allow limited vehicle traffic (cont.)  Disadvantages – Will require additional measures to limit traffic to 4 tonnes – Would extend the structure service life by only 3 to 5 years – High uncertainty and potentially significant cost escalations due to deteriorated sections – Structure does not meet current design standards – Final demolition cost (currently $2.3 million) escalates further
  12. 12. Option #2: Demolish & Replace  Demolition cost of $2.3M and then $28. 5M to $33M for replacement (depending on location) = Total estimated cost of $31M to $35M  Estimated project timeline of 4 – 5 years  Advantages – New structure with minimum 50-year design life
  13. 13. Option #2: Demolish & Replace (cont.)  Disadvantages – Completion will likely coincide with new Daly Overpass – High capital cost, low return on investment
  14. 14. Option #3: Demolish and replace with pedestrian/cyclist crossing  Estimated Cost of $2.3M demolition, plus $9.5M for pedestrian / cyclist structure = Total Cost of $11.8M  Estimated project timeline of 3 – 4 years  Advantages – Maintains north south connectivity and access for pedestrians/cyclists – New structure will meet current standards
  15. 15. Option #3: Demolish and replace with pedestrian/cyclist crossing (cont.)  Disadvantages – No vehicular connection – High capital cost
  16. 16. Option #4: Demolish  Estimated Cost of $2.3M  Estimated timeline of 1 – 2 years  Advantages – Mitigates public safety concerns – Eliminates future continued maintenance and monitoring costs  Disadvantages – Community impacts
  17. 17. Questions ?

Presentation provided by City of Brandon Administration at the 8th Street Bridge Community Information Session held November 19th, 2015, at Brandon City Hall.

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